13■ Battery case (BP-263)When using the battery case (BP-263), install 6 × AA (LR6)size alkaline batteries, as described below.qRemove the battery case, if it is attached. (p. 2)wInstall 6 × AA (LR6) size alkaline batteries.• Install only alkaline batteries.• Be sure to observe the correct polarity.eAttach the battery case. (p. 2)CAUTION:• When installing batteries, make sure they are all thesame brand, type and capacity. Also, do not mix new andold batteries together.• Keep battery terminals clean. It’s a good idea to cleanbattery terminals once a week.• Never incinerate used battery cells, since the internalbattery gas may cause them to rupture.• Never expose a detached battery case to water. If the bat-tery case gets wet, be sure to wipe it dry before using it.• Never use batteries whose insulated covering is damaged.NOTE: When the battery case is attached, the Battery Pro-tection function must be turned OFF in the Initial Set mode(p. 38).■ Battery informationD Battery lifeEven when the transceiver power is OFF, a small currentstill flows in the transceiver. Remove the battery pack/casewhen it won’t be used for a long time. Otherwise, the batterypack or the batteries in the case will become exhausted.D Battery icon3 BATTERY CHARGINGBattery pack/case Voltage Capacity Battery life* 1BP-263 Battery case forAA (LR6) × 6 alkaline —*2BP-264 7.2 V 1400 mAh 13.5 hrs.(approx.)BP-265 7.4 V 1900 mAh (min.)2000 mAh (typ.)18.5 hrs.(approx.)*1 When the Power Save function is set to “P–S.At” (p. 37) and theoperating time is calculated under the following conditions;TX : RX : standby = 5 : 5 : 90*2 The average operating life depends on the alkaline cells used.Icon Battery conditionThe battery has ample capacity.The battery is nearing exhaustion.Charging the battery pack, or replacing the batteriesin the case is necessary.Be careful! The negative termi-nals of the battery case protrudefrom the body, so pay attentionnot to injure your fingers wheninserting the batteries.